Amplifier



FIG. 1 is a front perspective view of an amplifier with a rotatable front door showing my new design, with the front door closed;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front perspective view of the amplifier, with the front door open;

FIG. 9 is a front elevational view of the amplifier, with the front door open; and,

FIG. 10 is a right side elevational view of the amplifier, with the front door open.

The broken lines shown in the drawings represent unclaimed portions of the amplifier and form no part of the claimed design. 

CLAIM The ornamental design for an amplifier, as shown and described. 